A 22-year-old woman from Karachi who married a Jawaki shopkeeper about two years ago was accused of fleeing her husband's house and marrying another man in the Swat valley with the help of her aunt and cousin, a local administration official told AFP.
The jirga intervened in the matter and decided on Sunday that the women should be killed.
Relatives shot the three dead at their house late Sunday and buried them on Monday morning, he added.
"It is a case of honour killings and was settled under tribal customs where the country's criminal code is not applicable," the official told AFP on condition of anonymity.
"According to the information gathered from local sources, the girl was not happy with her husband."
Local intelligence officials confirmed the killings.
The Human Rights Commission of Pakistan says 943 women and girls were murdered in 2011 after being accused of tarnishing their families' honour.
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Why these killers do not kill themselves because they have been dishonoured and have lost their "faces"??
Some countries are still in stone age.
This happened in FR Kohat and not in Peshawar